What is the meaning of Possessional_adjective?

An adjective indicating that a noun is in possession of, or has the quality of, some other noun; usually formed in English by the affixation of the suffix -ed, -ful, -y, -ous, -able, -ual, -ish, -ar or -esque, or the suffixoid -like, to the noun being possessed.

Source: wiktionary.org